(19)

(11)

EP 4 238 109 A1

(12)

(43) Date of publication: 06.09.2023 Bulletin 2023/36 (21) Application number: 21802269.7 (22) Date of filing: 28.10.2021

(51) International Patent Classification (IPC):  G21K 1/00(2006.01) (52) Cooperative Patent Classification (CPC): G21K 1/006 (86) International application number: PCT/EP2021/079961 (87) International publication number: WO 2022/090381 (05.05.2022 Gazette 2022/18)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 29.10.2020 GB 202017157 (71) Applicant: University Of Southampton Southampton, Hampshire SO17 1BJ (GB)	(72) Inventors: DRAGOMIR, Andrei-Aurel Southampton Southampton SO17 1BJ (GB) HIMSWORTH, Matthew, David Southampton Southampton SO17 1BJ (GB) (74) Representative: Keilitz Haines & Partner Patentanwälte PartGmbB  Nigerstraße 4 81675 München 81675 München (DE)